Fixed particles in coaxial SF6 arrangements at various voltage stresses

Author

Arnold, P. ; Tenbohlen, S. ; Kohler, W. ; Riechert, U. ; Straumann, U.

Author_Institution

Univ. of Stuttgart, Stuttgart, Germany

fYear

2014

fDate

8-11 Sept. 2014

Firstpage

1

Lastpage

4

Abstract

With special respect to HVDC transmission, an artificial protrusion is investigated experimentally in compressed sulphur hexafluoride (SF₆) gas. Varied test parameters are voltage waveform and gas pressure. Corona inception and breakdown voltages are measured at DC and AC. Lightning and switching impulse breakdown voltages are evaluated at repeated constant amplitude stress. Composite voltage stress consisting of lightning impulse superimposed to DC bias is further examined. In this case, no significant reduction of lightning impulse breakdown voltage was observed at high gas pressure.

Keywords

HVDC power transmission; SF₆ insulation; coaxial cables; corona; electric breakdown; lightning; power cable testing; waveform analysis; AC; DC bias; HVDC transmission; artificial protrusion; coaxial SF₆ arrangements; composite voltage stress; corona inception measurement; fixed particles; gas pressure; lightning impulse breakdown voltage measurement; repeated constant amplitude stress evaluation; switching impulse breakdown voltage measurement; varied test parameters; voltage waveform; Breakdown voltage; Corona; Electrodes; Lightning; Stress; Sulfur hexafluoride;

fLanguage

English

Publisher

ieee

Conference_Titel

High Voltage Engineering and Application (ICHVE), 2014 International Conference on

Conference_Location

Poznan

Type

conf

DOI

10.1109/ICHVE.2014.7035379

Filename

7035379